Combined cleaning-door and chimney-valve



W. T. CLA'RK.

COMBINED CLEANING DOOR AND CHIMNEY VALVE.

Patented Sept. 13, 1921.

APPLICATION FILED FEB.24, I919.

Y- 2 SHEETS-SHEET I.

12/60/0 WurTCb/A W. T. CLARK. COMBINED CLEANING DOOR AND CHIMNEY VALVE. APPLICATION mad FEB. 24, 1919.

4m, m w Hm MC My ,n fl P w n r v Zr 0 mm mu &m 1% d2 6 & w W m P UNITED STATES WILBUR '1. CLARK, OF CLEVELAND, OHIO, THE HANNA FURNACE COMPANY,

ASSIGNOR, BY MESNE ASSIGNMENTS, TO A CORPORATION OF DELAWARE.

COMBINED CLEANING-DOOR AND CHIMNEY-VALVE.

Specification of Letters Patent.

Patented sept. 13, 1921.

Application filed February 24, 1919. Serial No. 278,766.

To all whom it may concern Be it known that I,-WILBUR T. CLARK, a citizen of the United States of America, residing at Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Combined Cleaning-Doors and Chimney-Valves of which the following is a specification.

My invention relates to improvements in combined cleaning door and chimney valve especially designed for use with not blast stoves, and has for its object the provision of a strong and effective structure of this class which shall be easily and conveniently operated, while affording at all times the opportunity for inspection and ready repair or re lacement.

otblaststovescommonlyhaveutilized separate and somewhat cumbersome means for cleaning them and for operating the connections to the chimney stack. These means, moreover, have not afforded adequate facilities for inspection and ready repair. Accordingly, I have endeavored to meet practical requirements by combining such means, preferably in a single structure for equipping hotblast stoves and the like.

My improvements as herein embodied and illustrated, may be briefly described as comprising a massive main frame or casting adapted to be set into the base of the hot blast stove, which casting preferably is provided with a removable valve-seating member. Its co-aoting valve-member is equipped with actuating means adapted alternatively to force it home to its seat or close the external opening through which inspection is afforded.

A removable front and an insertible protective shield for the duct to the chimney stack are provided for cleaning out the stove and facilitating replacements and repairs. Moreover, "the relatively heavy or massive movable members preferably are hingdmounted, suitably supported for :tGtIL ation and equipped with assembling memhere to avoid breakage.

My invention may be better described in its preferred embodiment by making reference to the accompanying sheets of draw ings illustrating such embodiment, where- Figure 1 is a view in front elevation partially broken away", showing the combined cleaning door and chimney valve for hot blast stoves, embodying my improvements.

member.

F 2 is a vertical sectional view thereof on l ne 2-2 of the preceding figure.

Fig. 3 1s a plan view of my improved structure, shown broken away in the lower lefthand corner.

Fig. 4 is a fragmentary section taken on line 4-4 of Fig. 1.

Fig. 5 is another fragmentary section taken on line 5-5, of Fig. 1 showing the valve-supporting means and a spacing Fig. 6 is a fragmentary section on line 6-6 of Fig. 3.

Throughout the several figures of the drawings, I have employed the same charactor of reference to indicate similar parts or elements.

Referring first to the vertical section, it is seen that the several members are mounted upon the massive casting a, to which is bolted the annular valve-seat member I) and the duct 0 leading to the chimney stack, while above the latter, the casting 05 forms a caslng inclosing the valve member 0. The latter is provided with an annular beveled face bearing snugly against the valve openmg, and is interiorly insulated. by asbestos packing e, or is otherwise suitably protected against intense heat.

Bolted securely to the upper and lower casing members, 01, f, is the annular closure 9, against which the valve member 6 is adapted rearwardly to be drawn by its threaded stem 6. This stem is carried by a spider it and hinged yoke t swinging from the right hand side of castings d, f, on the loose-pin hinge i. stem (2 is threaded into the tapped hand wheel j, which serves to actuate the valve member into its front and rear positions.

The casting forming said valve member 6, being of large size and heavy construction, is provided with two roller members in bearing upon adjustable supports la, k, attached at front and rear interiorly of the casing. Accordingly, this heavy valve member is readily actuated and accurately seats the front and rear valve openings; being forced to its place by the threaded stem and hand wheel.

In order to relieve the casing members from strain, the yoke 2' is provided with lateral bolts Z which are interiorly attached to the massive casting a by the self-locking gib-keys Z. These bolts pass through the spacing members m which are terminally The outer end of the removing the threaded and rearwardly screwed into the valve member?) at; either side of the valve opening, and when properly adjusted said members m, as shown in Fig. 6, are locked in position by jainb-nuts m. Thus the strain from the nuts Z" when tightened on bolts Z and yoke i, is carried directly to the spacing membersm, which are sleeved upon the bolts Z, and the casing is relieved from compression strains tending to break the casing members werethis not provided against by the structure set forth.

The valve h or damper member in the duct 0 leadingto the chimney stack may be operated bythe handle it. This is provided with a temporary covering or shield in the form of a sector 0 fitting beneath the valve openings and valve member 6. Said shield 01' covering 0 serves to prevent any material from falling into the duct 0 during cleaningoperations, and it is positioned above said duct for this purpose only during such operations. 'It'may readily be disposed-in the dotted line position of Fig. 1 when the casing is open.

In order to facilitate cleaning and afford free acce'ss to the valve-seat, as well, after peripheral securing bolts 2) and "clips p, the nuts Z are first taken from the bolts Z, so they may be pushed backito release'the gib-keys, and permit the bolts to be withdrawn, whereupon the entire yoke and spider may be swung back approximately to an angle of 180 upon the hinge at the right. This aflords free access to the interiorof the structure. Under these conditions, a thorough cleaning is readily accomplished or the interior of the structure is laid open forinspection.

Should it be found necessary at any time, the valve-seat member I) and its co-acting valve member 0 may be removed for refinishing or replacement; substitute counterparts immediately being installed in order to avoid an continued shut down of the associated hot blast stove.

In practice it is found that the pressure within the stove exerted upon the intensely heated products of combustion tends to destroy the effectiveness of thevalve closure. Accordingly, it is quite essential that the valve and valve parts shall be open to inspection, and in my improved structure these may be viewed through the aperture in the outer closure g, open to the external air wheni'the valve is closed. Thus any escape of the hot gases may at once be detected.

Constructed and mounted as shown, all operative parts are most easily and quickly actuated, while undue strains are provided against in forcibly seating the valve member, as is necessary in structures of this class.

It will be understood that when the chimney valve is opened, valve member a will close the central opening in 9, while the (llu't leading to the chimney stack will be cleared by actuating handle h and opening damper h to permit the escape of the products o combustion to the chimney.

Having now described the preferred embodiment of my invention, 1 claim as new and desire to secure by Letters Patent, the following 2- 1. In a structure of the class described, the combination with a massive frame-casting, of a casing open to the atmosphere, a removable valve-seat attached to said custing, a co-acting valve member, a yoke, actuating means for said valve member mounted upon the yoke, securing means therefor extending to the frame-casting, and spacing members for relieving any abnormal strains upon the casing, substantially as set forth 2. In a structure of the class described, the combination with a frame-casting. of r removable valve seat member provided thereon, a casing having an opposing opening to the atmosphere, a chimney stack connecting with the casing, a valve member adapted alternatively to engage said seat or close the opening, means for actuating the same, and a hinged support for the front of said casing and valve member, substantially as set forth.

3. In a structure of the class described, the combination with a frame provided with a valve-seat, of a sectional casing, a valve member within the casing and adapted to be engaged with said valve-seat, actuating mechanism therefor, and supporting means for said valve member mounted upon the frame independently of the casing, and actuating mechanism, substantially as set forth.

4. The combination with the gas outlet of a stove or the like, of an inclosing casing affording an accessible cleaning opening opposite said outlet, a valve member adapted alternatively to close the outlet or the cleaning opening, and means for actuating said valve member, substantially as set forth.

5. The combination with the gas outlet of a stove or the like, of an inclosing casing affording a connection to the chimney stack, a valve member adapted to close said outlet, means for actuating said valve member, and an additional valve member controlling the outlet to the chimney stack, substantially as set forth.

6. The combination with a valve seat disposed in vertical position to form the gas outlet of a stove or the like, of a vertically disposed closure member therefor, supports or ways whereon said member is adapted to travel, and actuating mechanism for said closure member, substantially as set forth.

7. The combination with a frame equipped with a valve seat and forming the gas outlet of a hot blast stove or the like, of a coactin closure member, actuating mechanism there or, a hinged support for said member and its actuating mechanism, and means connecting said support directly with the frame, whereby the strains initiated by the actuating mechanism are conveyed directly to the frame, substantially as set forth.

8. The combination with a frame having a valve seat and forming the gas outlet of a hot blast stove or the like, of an inclosing casing affording an inspection opening opposite said valve seat, a closure member adapted alternatively to close the outlet or the inspection opening, actuating mechanism therefor, a hinged support for said member and its actuating mechanism, and a damper controlling the stack connection from the casing,

9. The combination with a valve-seating member affording a lateral opening to a stove, furnace or the like, of a closure part adapted to be seated thereon, actuating mechanism therefor, a casing positioned about said valve-seating member but open at substantially as set forth.

the front to permit access for inspection and cleaning, a shield positioned within the opening in said casing, and means temp0- rarily securing it thereto, substantially as set forth.

10. The combination with a frame equipped with a valve-seating opening to a stove, furnace or the like, of a valve member, means for actuating said member against its seat, a casing partially inclosing the valve-seating opening and its valve, a casin open at the front to afford free access thereto, actuating means for the valve, a closure normally positioned within the opening in said casing, and a hinged yoke supporting the valve, its actuating mechanism and the closure, substantially as set forth.

In testimony whereof I do here aflix my signature in the presence of two witnesses,

WILBURT. CLARK. L s.]

Witnesses:

EDWARD B. WORTHINGTON, WILLIAM C. Soo'r'r. 

